In head-to-head comparisons, containers outperform hypervisors in every virtual CPU configuration. Containers eliminate the resource overhead inherent in hypervisor virtualization, resulting in significant improvement in application performance and scalability for a given vCPU configuration. For more information see our Performance Comparison white paper.
VPSs are available to the customer within a few minutes of ordering. Parallels Virtuozzo Containers are nearly “instant on” when provisioned with no operating system boot-up time.
VPS resources can be changed on the fly. With Parallels Virtuozzo Containers, the resources assigned to any individual container can be modified in real time and without restarting the container, allowing administrators to adjust assigned resources to meet the requirements of the workload. And Parallels Virtuozzo Containers don’t require a re-boot to grow.
Parallels Virtuozzo Containers includes a web-based control panel called Parallels Power Panel that enables Customers to self-manage, monitor, backup, restore and troubleshoot their VPS.
System calls — Parallels Virtuozzo Containers has a common kernel; no additional systems calls are created between excess layers.
File system — Common data is stored only once and is available to multiple environments, significantly improving the efficiency of both the disk space and system memory. The disk space for caching is also used efficiently, caching payload rather than duplicated data.
File system performance — The Parallels Virtuozzo Containers file system and efficient system call design create very small CPU usage overhead.
File system buffers/cache in memory — Parallels Virtuozzo Containers places a single instance of data and cache across the server, maximizing memory efficiency.
Memory management — Parallels Virtuozzo Containers handles memory allocation requests dynamically. Virtuozzo environments can use a lot of memory during load peaks, and users will fully benefit from running Virtuozzo on high-end servers. Applications in Virtuozzo environments can show very high peak performance.